1. ZIP type parallel conductor constructions afford the lowest cost and
overall ease of termination. They are significantly less costly than Teflon
FEP constructions, with only slightly lower impedance. ZIP cable use should
be limited to areas where they can be routed away from noise aggressors such
as CPU's, fans, and power supplies. Due to their parallel construction, they
do not have good crosstalk isolation and common mode noise rejection.

2. Loose Pair constructions afford a maximum of cable flexibility and
routability in bus applications requiring good air flow for heat
dissipation. Their twisted pair construction yields good common mode noise
rejection and crosstalk isolation. However, impedance control is not as
tight as fully laminated twisted pair designs.

3. Fully Laminated twisted pair constructions afford good control of
impedance, skew, and crosstalk due to precise placement of the twisted
pairs. The dual lamination (top and bottom of the pair) allows the cable to
be bent and folded without delamination and subsequent cable failure.
Folding and creasing of this type of cable should be minimized at Ultra320
data rates in order to avoid reflections caused by impedance
discontinuities.

4. OptiClearTM is recommended for Ultra320 applications where the cable
must be round for maximum airflow and cable routability, while retaining the
consistent electrical performance required of Ultra320 signaling.